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Q: Fachverband Quantenoptik und Photonik
Q 27: Phase Transitions
Q 27.2: Vortrag
Mittwoch, 13. März 2024, 11:30–11:45, Aula
Dissipative cooling of many-body states realized with Rydberg atoms — •Katharina Brechtelsbauer1, Thierry Lahaye2, Antoine Browaeys2, and Hans Peter Büchler1 — 1Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany — 2Université Paris-Saclay, Institut d'Optique Graduate School, CNRS, Laboratoire Charles Fabry, 91127 Palaiseau Cedex, France
Dissipative preparation of quantum states offers a promising alternative to the adiabatic approach, which is often limited to small system sizes due to gap-closings near quantum phase transitions. In this work we propose a setup for preparing many-body states in systems of Rydberg atoms. The idea is to couple the system to a dissipative bath of additional Rydberg atoms via dipolar exchange interactions, such that the system is dissipatively driven into a certain stationary state. The selection of this final state is based on energy conservation, where the detuning between system and bath is tuned to ensure that the preferred decay channels are stronger than other ones. Depending on the exact form of the system-bath interactions the setup can be used to add excitations to the system or to cool into a certain system eigenstate while conserving the number of excitations.
Keywords: Rydberg atoms; Dissipation; State preparation; Entanglement